How to use MavLink c library

I have cloned the c_library v2.0, and now I’d like to use it for experimentation. However, I can’t seem to find a single function from the library in mavlink.h. I have gone through some of the MAVLink documentation and the README file on the GitHub page, but I couldn’t find the information needed to understand it. Could someone please help me understand how and where to start, and where I can learn the function names and their purposes for using it? Any help will be greatly appreciated. Thank you.